Toyota Jidosha Kabushiki Kaisha

Hitachi, Ltd.

Hitoshi Murakami

Naoki Yamamuro

Junya Watanabe

Kouji Masuda

Yoshikazu Jikuhara

Yuki Yamashita

Ryota Suzuki

Shigeki Matsumoto

Masatoshi Yoshida

Noboru Shimizuike

Jiro Iwasaki

Hidenobu Muramatsu

A server includes: a communication device configured to communicate with a communication terminal of a holder; and a processor. The processor is configured to issue a verifiable credential in response to an issuance request signal received from the communication terminal. The issuance request signal is a signal requesting issuance of the verifiable credential, and contains attribute information of the holder and a first decentralized identifier that is a decentralized identifier of the holder. The processor is configured to set a validity period for the verifiable credential based on the attribute information of the holder. The processor is configured to associate the set validity period with the first decentralized identifier.

Server, information management system, and information management method

A data management system includes a plurality of data management apparatuses, a certification authority group, and a time stamp authority group. In making an application for a proof of existence of invention information, the data management apparatus generates an invention hash, and transmits the invention hash to selected time stamp authorities of the time stamp authority group. Each of the time stamp authorities having received the invention hash generates a time stamp token. The data management apparatus acquires the time stamp token from each of the plurality of time stamp authorities to which the invention hash has been transmitted.

Data management apparatus and data management method

An operation content evaluation system for evaluating an operation content for controlling computer resources, the operation content evaluation system including: a content site including a content management server for distributing operation contents for controlling computer resources; and a user site including a content evaluation server for evaluating one of the operation contents and computer resources, wherein the content management server holds catalogs associated one-to-one with the operation contents and each of the catalogs includes prerequisites for executing an operation content and evaluation elements for the operation content, wherein the content evaluation server holds configuration information collected from the computer resources in resource management information, and wherein the content evaluation server acquires the catalogs from the content management server, selects a catalog associated with the operation content to be evaluated from the catalogs, and evaluates the operation content by comparing the selected catalog with the resource management information.

Operation content evaluation system and storage medium

Growing community of inventors

Tokyo, Japan

Hitoshi Murakami